Latch



UNITED STATES PATENT OFFICE.

GEORGE H. STONE ANDAUGUSTUS COTE, OF BRISTOL, CONNECTICUT.

LATCH.

SPECIFICATION forming part of Letters Patent No. 372,878, dated November 8, 1887.

Application filed April 19, 1887.

To all whom, it may concern:

Be it known that we, GEORGE H. STONE and AUGUSTUS COTE, citizens of the United States, residing at Bristol, in the county of Hartford and State of Connecticut, have invented new and useful Improvements in Latches, of which the following is a specification.

Our invention relates to improvements in latches and the means of securing thesame in place, having for its object the provision of means whereby a latch may be set in a door more easily and quickly than heretofore.

The invention consists in so constructing the said latch as to enable it to be inserted in a recess or opening formed by an auger, and to do so it'is made cylindrieal'in shape. r v

- The invention consists, further, in providing means whereby the said latch, and also the catch which is placedin the jamb, may be secured in place without the use of screws or other ordinary fastenings.

The invention consists, further, in a peculiar arrangement of the interior movement of the latch to enable the same to occupy less space 'and at the same time be as efiective as the ordinary latch.

The invention consists, further, in certain details of construction and arrangement, clearly described hereinafter, specifically'pointed out in the claims, and illustrated in the accompanying drawings, in which Figure l is a sectional view of a door and jamb, showing the disposition of the latch and catch therein in operative position. Fig. 2is a view of the latch with the face-plate removed. Fig. 3 is a longitudinal central section on the line a: a: of Fig. 2. Fig. at is a detail view of the bolt detached.

Referring to the drawings by letter, A designates the cylindrical latch-case, havingthe threaded portion B at the front end slightly larger than the body of the latch, and C is a removable plate formed in the rear of the said threaded portion. It will be seen that the threaded portion of the latch is formed integrally with the bodyD of the latch,and through a rectangular opening, d, in thefront end of the said body projects the front end or nose of the bolt E, having the spring F to operate the and insert the same therein.

Serial No. 235,392. (No model.)

same and bear at the rear end against the post G in the usual manner.

H represents the barrel or spindle of the latch, having the two lateral studs h h, projecting forwardly at an angle of about forty-five degrees from each other, and the stud h, projecting directly forward between the said lat eral studs. The rear end of the bolt E is provided with the usual lateral arms, I I, to pass on opposite sides of the barrel, and on the ends of the said arms are provided the pins M, to be engaged by the studs h h, and a short distance from the said ends of the arms are disposed the supplemental pins 1" 6, adapted to be engaged by the stud h when the barrel is turned sufficiently. It will be seen, therefore, that in withdrawing the bolt by turning the spindle or barrel the studs it will act upon the pins 13 to retract the same a certain distance, when the stud h will engage with one of the pins z" and continue the motion until the bolt is drawn entirely in, slightly within the edge of the openingain the end of the body. By this arrangement the bolt may be drawn in equally as far as when the ordinary construction is employed, whereas the space occupied by the operating parts is much less.

The post G, which in the ordinary style of latch is provided with a threaded opening in the end to receive a screw to secure the plate C in place, is in our improved latch extended through the said upper plate and provided with an eye to receive a pin, 9, on the upper side of the plate to hold it in place. The outer side of the said plate around the end of the said stud G is recessed, as at c, to allow the end of the stud and the pin passed through the eye therein to come within the general cylindrical form of the latch-case.

To secure the latch in place, bore a hole in the edge of the door with an auger, of a sufficient size to receive the body of said latch, The latch will slip in readily until the threaded portion of the same comes to the edge of the opening, when the body must be turned to cause the screw to engage in the wood, and then screwed in until the outer face of the latch is-flush with the edge of the door. It will be seen that when the opening in the barrel is brought into proper alignment with the transverse opening in the door, formed for the reception of the shank of the knob, the body of the latch will be securely fixed in position, and that no screws are needed to maintain it thus.

K designates the catch to receive the bolt, and is made cylindrical in form, with a rectangular opening, K, therein to receive the nose of the bolt, the body of the catch being threaded exteriorly and provided on the front edge with a flange or edge plate, 7c, formed integral with the said body and beveled on the rear side.

To secure the catch in place, bore a hole in the jamb of the door of the same size as for the latch, slightly beveling the outer edge thereof, and secure the catch in place by screwing it into the opening thus formed in such a position that the flange I: will project outwardly far enough to protect the head on the molding of the jamb from being injured by the nose of the bolt.

It will be seen that the construction and operation of our latch are extremely simple, and

the attachment of the same to the door is much i tiolly as and for the purpose hereinbefore set more easily and quickly accomplished than with latches heretofore made, as it is only in this case necessary to bore once with an anger of the proper size to provide a recess adapted to receive the body of thelatch, while usually it is necessary to bore at least twice, and then chisel out the material between the holes thus formed. Further, with our latch it is only necessary to insertthe body and turn the same into place, while with ordinary forms of latch a shallow recess for the face-plate must be chiseled and the same secured in place by screws.

The herein-described manner of securing a latch in place may, as will be readily seen, be applied to looks, bolts, &c., and we do not limit ourselves to the precise construction and application as herein described.

Having now described the construction, operation, and advantages of our invention, what we claim, and desire to secure by Letters Patent, is

1. A latch having the cylindrical body D, removable plate 0, threaded portion B, springactuated bolt E, post G in the said body, adapted to pass up through an opening in the said plate 0, the eye in the upper end of the said post, and the pin 9 to pass therethrough, substantially as and for the purpose set forth.

2. In a latch, the combination of the body D, threaded portion B, bolt E, having the arms I I, pins 11 i and z" i on the said arms, barrel H between the said arms, having the studs h h, set at an angle with each other, and the intermediate stud, h, adapted to operate substanforth.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.

GEORGE H. STONE. AUGUSTUS COTE. \Vitnesses:

BENJ. F. HAWLEY, ELBERT E. THoRrE. 

